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Bones - Anatomy & Physiology (view source)
Revision as of 15:01, 6 January 2011
, 15:01, 6 January 2011→Bone Remodeling
==Bone Remodeling==
==Bone Remodeling==
[[Image:Haversian system.jpg|right|thumb|100px|<small><center>Haversian system (Courtesy of RVC Histology images)</center></small>]]
'''Primary''' bone has not yet been '''remodelled'''. It contains less mineral and more randomly arranged collagen fibers, known as trabecular organization. Remodelling of bone occurs by '''haversian canals'''. The osteoclasts dig out the canal longitudinally through the bone connecting with bone marrow cavity and periosteum. They are followed by anastamosing and branching blood vessels. Concentric bony lamellae are laid down with rows of interconnected lacunae containing '''osteocytes''' within. The osteocytes communicate by channels in young bones. Phased resorption happens concurrently.
'''Primary''' bone has not yet been '''remodelled'''. It contains less mineral and more randomly arranged collagen fibers, known as trabecular organization. Remodelling of bone occurs by [[Haversian Systems|'''haversian canals''']]. The osteoclasts dig out the canal, followed by blood vessel invasion. Concentric lamellae are laid down and phased resorption happens concurrently.
'''Haversion canals + lamellae + osteocytes = Haversion system'''
==Types of Bone==
==Types of Bone==